Concrete-building-block wall.



No. 877,997. 7 PATENTEDL FEB. 4, 1908. P. M. HENRY.

CONCRETE BUILDING BLOCK WALL.

APPLICATION FILED AUG. 12.1907.

2 SHEETS-SHEET '1.

No. 877,997. PATENTED FEB. 4, 1908. P, M. HENRY.

GONGRBTE BUILDING BLOCK W ALL.

APPLIOATION FILED AUG..12. 1 907.

2 SHEETS-SHEET 2.

' UNITED STATES PA'IhI lT ilFiz ll Ullt.

FRANCIS M. HENRY, OF MINNEAPOLIS, MIN NIDSOTA.

GONCRETE-BUILDING-B LOCK WALL.

Specification of Letters Patent. Application filed August 12. 1907. Serial it. 388.117.

. Patented. Feb. 4, 1908.

To all whom it may concern: I

Be it known that 1., FRANCIS M. HENRY, of

Minneapolis, llennepincounty, Minnesota,

have invented certain new and useful Iniprovci'nents in (oiicrete-,Builduig-Bloclc Walls, oi which the l'ollowing is a specification.

The object of my invention is to provide a wall composed of interlocking blocks which when placed together will form a wall with vertical air spaces or lines therein.

A further object is to provide a wall com- .posed of blocks .liaving tongues projecting orizontally on each side of the middle line of the all and invisible on each side when the wall is completed. This invisible characteristic of the tongue on the blocks in this case distinguishes this application from my Former one, filed Jan. 19, 1907, Serial No.

- same. Fig. 3 is a similar view illustrating a modified construction. Fig. 4 is a top view of a wall showiiig'the modified form of the vertical air line, therein. Fig. 5 is a detail .view of one of the blocks. Fig. 6 is a front or face view of the same. Fig. 7 is a detail view of ajiller block that is employed at the corners of the wall.

In the drawing, 2 represents a block rectangular in form of concrete construction .having webs 3 at each end and an intcrniediate centrally arranged tongue 4 that is dovetailed lIl torm between which tongue and the webs 3 concave surfaces 5 are provided.-

These are preferably IOI'IDOt l as shown in Fig. 2 to produce verticalllues or air shafts that are oval in cross section and diagonal with respect to the faces of the wall. The pur pose of this is to thickenv the webs 3 and rovide more stock therein and prevent, to a ai'ge degree the danger of their breakingofl' during the molding operation, or while being handled or built into the wall. The dove-tail form of the tongue fl: causcs the formation of recesses 6 oneacli side thereof, the bottoms oi.

said recesses being in line substantiahy with the middle line ol the wall, and the webs 3 are provided with corres onding recesses 7 into which the ends ol thetongu es of the oppositeblocks are litted. Thus, as shown in Figs. 1

and 2 the verticaljointsbetween-the block's alternate in position. on each side of the wall, the tongue of the, block on one side being opposite the webs of the contiguous blocks on the other'side and when thewebs and tongue are fitted together they will interlock and the blocks forming the two faces of the wall willbe firmly united together and it will be impossible "for them to become separated accisdentally or through any settling or heaving of the wall. it

In my former application above referred to i the medial tongues on the block extend entirely through and are visible on'each side of the wall, while in this case the tongues are. dove-tailed in form and each tongue inter locks with. the end of the adjoining block so that when the wall is com leted the tongues will be invisible and the clocks will be securely locked together.

In building the wall an insulating strip 8 of felt, straw-board or other suitable material may be inserted between the oints of the oppositc blocks to prevent moisture from passi ing through from one side of the wall to the other.

In Fig. 3 I have illustrated a modified con struction which consists in providing heads 9 on the ends of the tongue to lit into recesses 10 in the ends of the block. Circular air spaces 11 are formed and the middle portion of each block has a vertical opening 12.

In Fig. 4 the type of block shown in Fig. 3

is provided, built into a wall but hav ng.

dove-tailed tongues on the ii'iiddle portions of the blocks corresponding to the tongues shown in Figs. Land 2, and which Iwill desig nate by the same reference numeral. At the corner of the wall I provide a block 13 having a web I4 at one end provided with. a re? cess 15 to receive the end of the tongue on the corner block. The position of the block 13 in the wall is indicated in Fig. 1, being arran ed in line with the inner faces of the wal s and at its outer end alternating in position first on one side of the corner and then on the other. surface 16 cooperating with the recess in the corner block to form the vertical air flue.' The outer faces of these blocks have vertical.

It is provided with a concave i any "suitable" length on each side and the ends of said head having webs projecting'therefrom in planes substan tially paral cl with the plane of said tongue I and on the same side of the block, and the ends of said webs and the inner ends of the recesses in said tongue bein coincident with the longitudinal center of the wall, and said webs having recesses in the ends of the block to receive the tongue on the opposite contiguous block, and the ends of said tongues being opposite the joint between the ends of I contiguous blocks on the same side of the l Walland concealed on the outside and form- I ing a lock between the opposite blocks, and 1' there being concave surfaces formed between said tongues,'and the ends of the blocks and grooves 17 formed therein at intervals and I arranged so that when the-blocks are placed one upon anotherthese grooves will register and form continuous rooves from the top to the bottom of the wafi. v he "grooves may be made of suitable width and depth to produce a cut stone efv fe-(, 3t,,, o1 -the grooved surface may be coated with a plasterpreparation to form an eX- teriorjfinish. The blocks may be made of and depth, and when built into the wall will form a very substantial, durable structure. This block is designed particularly for use where the interlocking of the blocks-forming the faces of the wall is "desired, and where the ends of the tongues should .be concealed within the wall to obtain a suitable surface for the exterior flues that are substantiall y oval in cross section and diagonal with I claim as my invention: line of the wall, for the purpose specified. 1. A wall composed of T-shaped blocks, 3. A wall composed of T-shaped blocks each having a rectangular head forming a each having a rectangular head with a censtretcher with a clove-tailed tongue molded trally arranged tongue extending transversely transversely on said head midway between I of the block, said. tongue having recesses in its ends, said tongue having recesses on each its .op osite' side side and the inner ends of said recesses coinblock ciding with the longitudinal middle line of block and the inner surface of said head on each side of said tongue being concave and the ends of said head having webs projecting aving terminal webs projecting outblock and parallel substantially with said tongue, said tongue being dove-tailed 1n 3 form and said terminal therefrom in planes substantially parallel adapted to receive said tongue, and the ends With the plane of said tongue and on the of the tongues being opposite the joints besame side of the block, and the ends of said i tween the ends of contiguous blocks on the Webs being coincident with the longitudinal same side of the wall and concealed onvthe center of the wall, and said webs having rel outside and formingalocking means between cesses in the ends of the block corresponding contiguous blocks, and the outer faces of said substantially to those on said tongue and into E blocks having a series of closely arranged, which web recesses the tongues of the adj oinshallow, vertical grooves therein, those of 1 'ing blocks are adapted to fit, and the tongues one block being adapted to register with the in the block on one side ofthe wall being opcorresponding grooves of the b ocks above a each having a and below when the blocks are built into the wall and thereby form continuous grooves extending vertically in the face of the wall.

In witness whereof, I have hereunto set my hand this 8th day of August 1907.

' FRANCIS M. HENRY.

posite the joint between the ends of the locks on the other side of the wall and invisible from said other side and the concave surfaces in the opposite blocks forming vertical fines, substantially as described. I 2. A wall composed of T-sha'ped blocks 1 rectangular head with a tongue molded. transversely on said head midway l between its ends, said tongue having recesses Witnesses:

RICHARD PAUL, J. B. BYINGTON.

respect to the centerwardly therefrom on the same side of the said concave surfaces forming vertical air faces and the ends of saidwebs having recesses 

